diff --git a/htdocs/accountancy/admin/account.php b/htdocs/accountancy/admin/account.php
index c9849f9f54f..4c9bb047439 100644
--- a/htdocs/accountancy/admin/account.php
+++ b/htdocs/accountancy/admin/account.php
@@ -51,14 +51,14 @@ $confirm = GETPOST('confirm', 'alpha');
 
 $chartofaccounts = GETPOST('chartofaccounts', 'int');
 
-$permissiontoadd = $user->rights->accounting->chartofaccount;
-$permissiontodelete = $user->rights->accounting->chartofaccount;
+$permissiontoadd = !empty($user->rights->accounting->chartofaccount);
+$permissiontodelete = !empty($user->rights->accounting->chartofaccount);
 
 // Security check
 if ($user->socid > 0) {
 	accessforbidden();
 }
-if (!$user->rights->accounting->chartofaccount) {
+if (empty($user->rights->accounting->chartofaccount)) {
 	accessforbidden();
 }
 
diff --git a/htdocs/accountancy/admin/accountmodel.php b/htdocs/accountancy/admin/accountmodel.php
index f19afb12899..97a460beaac 100644
--- a/htdocs/accountancy/admin/accountmodel.php
+++ b/htdocs/accountancy/admin/accountmodel.php
@@ -78,7 +78,7 @@ $search_country_id = GETPOST('search_country_id', 'int');
 if ($user->socid > 0) {
 	accessforbidden();
 }
-if (!$user->rights->accounting->chartofaccount) {
+if (empty($user->rights->accounting->chartofaccount)) {
 	accessforbidden();
 }
 
diff --git a/htdocs/accountancy/admin/card.php b/htdocs/accountancy/admin/card.php
index 4d69eae7db8..9430bf33439 100644
--- a/htdocs/accountancy/admin/card.php
+++ b/htdocs/accountancy/admin/card.php
@@ -48,7 +48,7 @@ $label = GETPOST('label', 'alpha');
 if ($user->socid > 0) {
 	accessforbidden();
 }
-if (!$user->rights->accounting->chartofaccount) {
+if (empty($user->rights->accounting->chartofaccount)) {
 	accessforbidden();
 }
 
diff --git a/htdocs/accountancy/admin/subaccount.php b/htdocs/accountancy/admin/subaccount.php
index c3308393c27..26c02de3467 100644
--- a/htdocs/accountancy/admin/subaccount.php
+++ b/htdocs/accountancy/admin/subaccount.php
@@ -46,7 +46,7 @@ $search_type = GETPOST('search_type', 'int');
 if ($user->socid > 0) {
 	accessforbidden();
 }
-if (!$user->rights->accounting->chartofaccount) {
+if (empty($user->rights->accounting->chartofaccount)) {
 	accessforbidden();
 }